I am trying to add custom CSS for plugin admin Page. If I use below code then it is working.

wp_enqueue_style( 'cricket-info-admin-styles', plugins_url('') . '/wp-cricket-info/assets/css/admin_styles.css', false, '1.0.0', 'all' );

But if I use below code it is not working.

wp_enqueue_style( 'cricket-info-admin-styles', plugins_url('wp-cricket-info/assets/css/admin_styles.css', __FILE__), false, '1.0.0', 'all' );

Why second code is not working ?

2 Answers 2


I guess you're using this code in a wrong file other than the main plugin file (usually /wp-content/plugins/wp-cricket-info/wp-cricket-info.php). So, the file you're referencing when enqueueing is actually incorrect.

Follow the steps below-

  1. Define a constant in the main plugin file that references the file itself.

define( 'WP_CRICKET_INFO', __FILE__ );

  1. When enqueueing the CSS, use that constant as the second parameter.

wp_enqueue_style( 'cricket-info-admin-styles', plugins_url( 'assets/css/admin_styles.css', WP_CRICKET_INFO ), false, '1.0.0', 'all' );


It's likely because plugins_url() returned an invalid URL like so: ( note the wp-cricket-info/wp-cricket-info/ )


So if you specify the 2nd parameter, which is a full path to a file inside a plugin or mu-plugin, then the 1st parameter should be a path relative to the directory of that plugin.

  • Correct: plugins_url('assets/css/admin_styles.css', __FILE__)
  • Incorrect: plugins_url('wp-cricket-info/assets/css/admin_styles.css', __FILE__)

And with plugins_url(''), your code worked correctly because the directory (wp-cricket-info/) was not "doubled".

  • Thanks @Sally CJ. If I use this code wp_enqueue_style( 'cricket-info-admin-styles', plugins_url('assets/css/admin_styles.css', __FILE__), false, '1.0.0', 'all' ); then I am getting output But I need output Thanks.
    – abu abu
    Commented Aug 6, 2023 at 6:07
  • 1
    In that case, then you would want to define a constant which stores the full absolute path to the main plugin file, e.g. if the file is at wp-content/plugins/wp-cricket-info/wp-cricket-info.php, then add define( 'WP_CRICKET_INFO_PLUGIN_FILE', __FILE__ ); at the top in that file. Then pass that constant to plugins_url(), i.e. plugins_url( 'assets/css/admin_styles.css', WP_CRICKET_INFO_PLUGIN_FILE );.
    – Sally CJ
    Commented Aug 6, 2023 at 6:43
  • 1
    Or you could define the full URL to the plugin folder, e.g. define( 'WP_CRICKET_INFO_PLUGIN_URL', plugin_dir_url( __FILE__ ) );, and use that constant from within any PHP files in your plugin folder, e.g. WP_CRICKET_INFO_PLUGIN_URL . 'assets/css/admin_styles.css'.
    – Sally CJ
    Commented Aug 6, 2023 at 6:46

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